Indoor Medium-Voltage Solid-Sealed Vacuum Circuit Breaker 12kV

Product Overview

Core Features

• Independent R&D Solid-Sealed Design: Advanced solid-sealed vacuum interrupter structure, excellent insulation performance, and high resistance to environmental interference.
• Superior Operation Performance: Optimized for frequent operation and reliable short-circuit current interruption, fully compliant with automatic reclosing requirements of power grids.
• Dual Installation Modes: Available in fixed and truck-mounted configurations for switchgear, adapting to different indoor distribution cabinet layout needs.
• Wide Environmental Adaptability: Operates stably in extreme temperatures (-40°C to +40°C) and heavy pollution (Class Ⅳ) environments, strong seismic and wind pressure resistance.
• Long Service Life & High Reliability: Vacuum arc-extinguishing technology with no gas pollution, minimal maintenance, and consistent performance for long-term operation.
• Comprehensive Protection: Serves as the key control and protection device for 12kV and below power grids, effectively isolating faults and ensuring grid stability.

Basic Technical Attributes

Operating Environmental Conditions

• Ambient Air Temperature: -40°C (min) ~ +40°C (max)
• Altitude: ≤2000m (custom insulation level available for higher elevations)
• Wind Pressure: ≤700Pa (equivalent to 34m/s wind speed)
• Seismic Intensity: ≤8 degrees
• Pollution Class: Ⅳ
• Maximum Daily Temperature Difference: ≤25°C
• Relative Humidity: Daily average ≤95%, Monthly average ≤90%
• Installation Site: No flammable/explosive risks, chemical corrosion or severe vibration

Application Scenarios

• Indoor Air-Insulated Switchgear: Core protection and control component for fixed/truck-mounted 12kV medium-voltage switchgear in substations.
• Frequent Operation Power Grids: Ideal for industrial plants, mines, and commercial parks requiring regular load switching and repeated fault interruption.
• Urban & Rural Medium-Voltage Distribution: Used in urban ring network distribution and rural power grid upgrading projects for reliable grid control.
• Industrial Power Supply Systems: Protection for production lines, heavy machinery, and critical load equipment in manufacturing and processing industries.
• Commercial & Public Facilities: Ensures stable power supply for data centers, hospitals, shopping malls and high-rise buildings with high reliability demands.
• Custom Power Distribution Projects: Adaptable to non-standard indoor medium-voltage distribution systems with specific installation and operation requirements.

Ordering Information

• Exact product name, model and total order quantity.
• Rated current and rated short-circuit breaking current of the circuit breaker.
• Type, name, operating voltage of the matched operating mechanism, and tripper type.
• Quantity of transfer trucks, spare parts and other auxiliary accessories required.
• Any other special technical or installation requirements (to be confirmed through negotiation).

Quality & Reliability

• The product is independently developed with mature manufacturing processes and strict full-process quality control from component procurement to finished product testing.
• Complies with international IEC standards and national high-voltage electrical equipment standards, with complete type test and performance verification reports.
• The solid-sealed vacuum structure ensures excellent arc-extinguishing performance and insulation stability, meeting the long-term operation needs of various harsh indoor environments.
• Provides comprehensive after-sales support including technical consultation, on-site installation guidance and spare parts supply for global customers.